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Finding the Fourth Proportional to 378,872.82, 567,909.36 and 126,085.32

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Solution

The fourth proportional to 378,872.82, 567,909.36 and 126,085.32 is: 188,994.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,872.82 : 567,909.36 = 126,085.32 : x
  2. Step 2: Convert to fraction form
    378,872.82/567,909.36 = 126,085.32/x
  3. Step 3: Cross multiply
    378,872.82x = 567,909.36 × 126,085.32
  4. Step 4: Simplify right side
    378,872.82x = 71,605,033,386.60
  5. Step 5: Solve for x
    x = 71,605,033,386.60/378,872.82
  6. Step 6: Final answer
    x = 188,994.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.